How long has it been since you purchased Pro?

If it's still valid, you can d/load it from your Pro d/l page.

Forward the email or forward a link to your Pro d/l page to an email account that you can access from your desktop. Then just use the link to get to your Pro page.

If not, then make a copy of the installer onto a disc and load it onto your desktop.

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If it ain't broke, fix it till it is!